body{
    display: flex;
    justify-content: center;
    background: url(../img/291292.jpg) no-repeat;
    background-size: cover;
}
.a{
    margin-top: 100px;
    width: 800px;
    padding: 100px;
    text-align: center;
    background-color: rgba(250,250,250,0.5);
}
.label{
    margin-right: 35px;
}
.labels{
    margin-right: 20px;
}
.input{
    width: 250px;
    height: 35px;
    border-radius: 5px;
    outline: none;
    border: 0px;
}
.btn{
    width: 300px;
    height: 35px;
    border-radius: 5px;
    color: white;
    background-color: deepskyblue;
    border: 0px;
}